At OCGems, we craft exceptional GIA-certified loose polished diamonds, ranging from 0.50ct to 3ct, in G–I colour and VVS–SI1 clarity. Through close collaboration with talented local artisans, we bring your vision to life with bespoke diamond jewellery, designed with precision, passion, and individuality.
Each journey begins with a detailed assessment of the rough diamond using 10x magnification to evaluate its natural characteristics and potential.
Advanced technology is used to map out the optimal cut, ensuring maximum beauty, yield, and value from each stone.
The rough diamond is precisely cut using laser technology, dividing it into workable pieces for further refinement.
The diamond is shaped into its initial round form, establishing the foundation for symmetry and balance.
Expert craftsmen meticulously polish each facet at precise angles to unlock the diamond’s brilliance, fire, and scintillation.
The finished diamond is carefully evaluated and graded according to the 4Cs—cut, colour, clarity, and carat weight—ensuring it meets the highest standards of quality and certification.

GIA graded loose polished diamonds.

Custom made diamond jewelry.

GIA graded fancy colored diamonds.
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